4

Could you clarify what you want with "4"? Do you want:

• four exam-prep tips, or
• four practice problems, or
• help with problem #4 from a set?

If you’d like a quick start right now, here are four universal exam-prep tips you can use immediately:

1. Map the syllabus: list all topics, note weights, and identify common question types. Plan a 4-week study schedule around this.
2. Practice actively: use active recall and spaced repetition (flashcards, self-quizzing) rather than passive rereading.
3. Do past papers under timed conditions: simulate exam environment to build familiarity and pacing.
4. Review and consolidate: analyze errors, form a concise formula sheet or crib sheet, and memorize key definitions, theorems, and steps.